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Specifying column name in a “references” migration
I want to make a migration in Rails, referencing another table. Usually, I would do something like:
6 Answers
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How to access the first property of a Javascript object?
...ever unofficially it is by all major browsers implementations, please read https://stackoverflow.com/a/23202095 for details on this.
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What is the `zero` value for time.Time in Go?
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The zero value for time.Time is 0001-01-01 00:00:00 +0000 UTC See http://play.golang.org/p/vTidOlmb9P
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Handling exceptions from Java ExecutorService tasks
I'm trying to use Java's ThreadPoolExecutor class to run a large number of heavy weight tasks with a fixed number of threads. Each of the tasks has many places during which it may fail due to exceptions.
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Print all but the first three columns
Too cumbersome:
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Listing each branch and its last revision's date in Git
I need to delete old and unmaintained branches from our remote repository. I'm trying to find a way with which to list the remote branches by their last modified date, and I can't.
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Difference between volatile and synchronized in Java
...nchronized with respect to memory visibility and instruction ordering (see http://www.cs.umd.edu/users/pugh/java/memoryModel/jsr-133-faq.html#volatile). For the purposes of visibility, each access to a volatile field acts like half a synchronization.
Under the new memory model, it is still true...
Difference between `data` and `newtype` in Haskell
...eUploader: {
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Change date format in a Java string
I've a String representing a date.
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What is duck typing?
...here are good examples of duck typing for Java, Python, JavaScript
etc at https://en.wikipedia.org/wiki/Duck_typing
Here is also a good answer which describes the advantages of dynamic
typing and also its disadvantages: What is the supposed productivity gain of dynamic typing?
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